If ESP®intervenes:
XDo not deactivate ESP®under any circum-
stances.
XOnly depress the accelerator pedal as far as
necessary when pulling away.
XAdapt your driving style to suit the prevail-
ing road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle
stops moving. The engine starts automati-
cally when the driver wants to pull away again.
ESP
®remains in its previously selected sta-
tus. Example: if ESP®was deactivated before
the engine was switched off, ESP®remains
deactivated when the engine is switched on
again.
Deactivating/activating ESP®
Important safety notes
iObserve the "Important safety notes" sec-
tion (
Ypage 67).
You can select between the following states
of ESP
®:
RESP®is activated.
RESP®is deactivated.
GWARNING
If you deactivate ESP
®, ESP®no longer sta-
bilizes the vehicle. There is an increased risk
of skidding and an accident.
Only deactivate ESP
®in the situations descri-
bed in the following.
It may be best to deactivate ESP®in the fol-
lowing situations:
Rwhen using snow chains
Rin deep snow
Ron sand or gravel
iActivate ESP®as soon as the situations
described above no longer apply. ESP®will
otherwise not be able to stabilize the vehi- cle if the vehicle starts to skid or a wheel
starts to spin.
!Avoid spinning the driven wheels for an
extended period with ESP®deactivated.
You could otherwise damage the drivetrain.
Deactivating/activating ESP
®
You can deactivate or activate ESP®via the
on-board computer (
Ypage 74).
ESP
®deactivated:
The å ESP
®OFF warning lamp in the
instrument cluster lights up.
ESP
®activated:
The å ESP
®OFF warning lamp in the
instrument cluster goes out.
Characteristics when ESP
®is deactivated
If ESP
®is deactivated and one or more wheels
start to spin, the ÷ESP®warning lamp in
the instrument cluster flashes. In such situa-
tions, ESP
®will not stabilize the vehicle.
If you deactivate ESP
®:
RESP®no longer improves driving stability.
Rengine torque is no longer limited and the
drive wheels are able to spin.
The spinning of the wheels results in a cut-
ting action for better traction on loose sur-
faces.
Rtraction control is still activated.
RESP®still provides support when you brake
firmly.
Crosswind Assist (vehicles without
MAGIC BODY CONTROL)
General information
Vehicles with MAGIC BODY CONTROL: infor-
mation on stabilizing the vehicle in the event
of crosswind (
Ypage 194).
Strong crosswinds can cause your vehicle to
deviate from a straight course. The crosswind
driving assistance function integrated into
ESP
®significantly reduces these effects.
74Driving safety systems
Safety
ESP®intervenes automatically according to
the direction and intensity of the crosswinds
affecting your vehicle.
ESP intervenes with stabilizing braking to
assist you in keeping the vehicle in the lane.
Crosswind Assist is active at vehicle speeds
above 50 mph (80 km/h) when driving
straight ahead or cornering gently.
Important safety notes
Crosswind Assist does not work if ESP
®is
deactivated or disabled because of a mal-
function.
EBD (electronic brake force distribu-
tion)
General information
EBD monitors and controls the brake pres-
sure on the rear wheels to improve driving
stability while braking.
Important safety notes
iObserve the "Important safety notes" sec-
tion (
Ypage 67).
GWARNING
If EBD is malfunctioning, the rear wheels can
lock, e.g. under full braking. This increases the
risk of skidding and an accident.
You should therefore adapt your driving style
to the different handling characteristics. Have
the brake system checked at a qualified spe-
cialist workshop.
Observe information regarding indicator and
warning lamps (
Ypage 288) as well as dis-
play messages (
Ypage 255).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safety
and offers increased braking comfort. In addi- tion to the braking function, ADAPTIVE BRAKE also has the HOLD function (
Ypage 192
)and
hill start assist (
Ypage 155).
PRE-SAFE®Brake
General information
PRE-SAFE®Brake can help you to minimize
the risk of a collision with a vehicle ahead or a
pedestrian, and reduce the effects of such a
collision. If PRE-SAFE
®Brake has detected a
risk of collision, you will be warned visually
and acoustically as well as by automatic brak-
ing.
iPay attention to the important safety
notes in the "Driving safety systems" sec-
tion (
Ypage 67).
PRE‑SAFE
®Brake is only available in vehicles
with the Driving Assistance Plus package.
For PRE-SAFE
®Brake to assist you when driv-
ing, the radar sensor system and the camera system must be switched on and be opera-
tional.
With the help of the radar sensor system and
the camera system, PRE-SAFE
®Brake can
detect obstacles that are in front of your vehi-
cle for an extended period of time.
In addition, pedestrians in the path of your
vehicle can be detected.
PRE-SAFE
®Brake detects pedestrians using
typical characteristics such as the body con-
tours and posture of a person standing
upright.
iObserve the restrictions described in the
"Important safety notes" sec-
tion“ (
Ypage 75).
Important safety notes
GWARNING
PRE-SAFE
®Brake will initially brake your vehi-
cle by a partial application of the brakes if a
danger of collision is detected. There may be
a collision unless you brake yourself. Even
after subsequent full application of the brakes
Driving safety systems75
Safety
Z
a collision cannot always be avoided, partic-
ularly when approaching at too high a speed.
There is a risk of an accident.
Always apply the brakes yourself and try to
take evasive action, provided it is safe to do
so.
In the event of a partial application of the
brakes, the vehicle is braked with up to 50% ofthe full braking pressure.
GWARNING
PRE-SAFE
®Brake cannot always clearly iden-
tify objects and complex traffic conditions.
In these cases, PRE-SAFE
®Brake may:
Rgive an unnecessary warning and then
brake the vehicle
Rnot give a warning or intervene
There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE
®Brake warns you. Terminate the
intervention in a non-critical driving situation.
GWARNING
PRE-SAFE
®Brake cannot always clearly iden-
tify people, especially if they are moving. In
these cases, PRE-SAFE
®Brake cannot inter-
vene. There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
PRE-SAFE
®Brake warns you.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a col-
lision, you must apply the brakes yourself.
GWARNING
PRE-SAFE
®Brake does not react:
Rto small people, e.g. children
Rto animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
As a result, PRE-SAFE®Brake may neither
give warnings nor intervene in all critical sit-
uations. There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and be ready to brake.
In the event of snowfall or heavy rain, the rec-ognition can be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
Rthere is dirt on the sensors or anything else
covering the sensors
Rthere is interference by other radar sources
Rthere are strong radar reflections, for
example in parking garages
Ra narrow vehicle traveling in front, e.g. a
motorbike
Ra vehicle traveling in front on a different line
relative to the center of your vehicle
Recognition by the camera system is also
impaired in the event of:
Rdirt on the camera or if the camera is cov-
ered
Rthere is glare on the camera system, e.g.
from the sun being low in the sky
Rdarkness
Rif:
-pedestrians move quickly, e.g. into the
path of the vehicle
-the camera system no longer recognizes
a pedestrian as a person due to special
clothing or other objects
-a pedestrian is concealed by other
objects
-the typical outline of a person is not dis-
tinguishable from the background
Following damage to the front end of the vehi-
cle, hav
e the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at low speeds where there is no visible
damage to the front of the vehicle.
Following damage to the windshield, have the
configuration and operation of the camera
76Driving safety systems
Safety
system checked at a qualified specialist work-
shop.
Function
XTo activate/deactivate:activate or deac-
tivate PRE-SAFE®Brake in the on-board
computer (
Ypage 245).
If the PRE-SAFE®Brake is not activated, the
æ symbol appears in the multifunction
display.
Starting at a speed of around 4 mph (7 km/h),
this function warns you if you rapidly
approach a vehicle in front. An intermittent
warning tone will then sound and the ·
distance warning lamp will light up in the
instrument cluster.
XBrake immediately to defuse the situation.
or
XTake evasive action provided it is safe to do so.
PRE-SAFE
®Brake can also brake the vehicle
automatically under the following conditions:
Rthe driver and front-passenger have their
seat belts fastened
and
Rthe vehicle speed is between approx-
imately 4 mph (7 km/h) and 124 mph
(200 km/h)
At speeds of up to approximately 44 mph
(70 km/h) PRE-SAFE
®Brake can also detect:
Rstationary objects in the path of your vehi-
cle, e.g. stopped or parked vehicles
Rpedestrians in the path of your vehicle
iIf there is an increased risk of collision,
preventive passenger protection measures
(PRE-SAFE
®) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking,
up to the point of full brake application. Auto-
matic emergency braking is not performed until immediately prior to an imminent acci-
dent.
You can prevent the intervention of the PRE-
SAFE
®Brake at any time by:
Rdepressing the accelerator pedal further.
Ractivating kickdown.
Rreleasing the brake pedal.
The braking action of PRE-SAFE
®Brake is
ended automatically if:
Ryou maneuver to avoid the obstacle.
Rthere is no longer a risk of collision.
Rthere is no longer an obstacle detected in
front of your vehicle.
STEER CONTROL
General information
STEER CONTROL helps you by transmitting a noticeable steering force to the steering
wheel in the direction required for vehicle
stabilization.
This steering assistance is provided in partic-
ular if:
Rboth right wheels or both left wheels are on
a wet or slippery road surface when you
brake.
Rthe vehicle starts to skid.
Important safety notes
iObserve the "Important safety notes" sec-
tion (
Ypage 67).
No steering support is provided from STEER
CONTROL, if:
RESP®is malfunctioning.
Rthe lighting is faulty.
Power steering will, however, continue to
function.
Driving safety systems77
Safety
Z
SmartKey functions
:&To lock the vehicle
;FTo open/close the trunk lid
=%To unlock the vehicle
XTo unlock centrally: press button=.
If you do not open the vehicle within
approximately 40 seconds of unlocking:
Rthe vehicle is locked again.
Rthe anti-theft alarm system is armed
again.
XTo lock centrally: press button:.
The key centrally locks/unlocks the following
components:
Rthe doors
Rthe trunk lid
Rthe fuel filler flap
The turn signals flash once when unlocking
and three times when locking.
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using COMAND (see the separate operating
instructions).
The visual and audible confirmation is given
upon locking only if all components were suc-
cessfully locked.
When the surround lighting is activated in
COMAND, it comes on when it is dark after
the vehicle is unlocked using the remote con-
trol. Information on activating and deactivat-
ing the surround lighting can be found in the
separate operating instructions.
XTo open the trunk lid automatically
from outside the vehicle: press and hold
button ;until the trunk lid opens.
KEYLESS-GO
General notes
Bear in mind that the engine can be started by
any of the vehicle occupants if there is a
SmartKey in the vehicle.
Locking/unlocking centrally
You can start, lock or unlock the vehicle using KEYLESS-GO. To do this, you only need carry
the SmartKey with you. You can combine the
functions of KEYLESS-GO with those of a con-ventional SmartKey. Unlock the vehicle by
using KEYLESS-GO, for instance, and lock it
using the &button on the SmartKey.
The driver's door and the door at which the
handle is used, must both be closed. The
SmartKey must be outside the vehicle. When
locking or unlocking with KEYLESS-GO, the
distance between the SmartKey and the cor-
responding door handle must not be greater
than 3 ft (1 m).
A check which periodically establishes a radio
connection between the vehicle and the
SmartKey determines whether a valid Smart-
Key is in the vehicle. This occurs, for example:
Rwhen starting the engine
Rwhilst driving
Rwhen using HANDS-FREE ACCESS
Rwhen the external door handles are
touched
Rduring convenience closing
SmartKey83
Opening and closing
Z
Make sure that nobody is in the vicinity of the
closing area during the closing process.
Use one of the following options to stop the
closing process:
Rpress theFbutton on the SmartKey.
Rpull or press the remote operating switch
on the driver's door.
Rpress the closing or locking button on the
trunk lid.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
!The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
iThe opening dimensions of the trunk lid
can be found in the "Vehicle data" section
(
Ypage 406).
Opening
You can open the trunk lid automatically
using the SmartKey.
XPress and hold the Fbutton on the
SmartKey until the trunk lid opens.
Closing
You can close the trunk lid automatically
using the SmartKey or the closing button in
the trunk lid.
XPress and release closing button :on the
trunk lid.
or
XIf the SmartKey is located in the immediate
vicinity of the vehicle: press the Fbut-
ton on the SmartKey.
You can release the button as soon as the
trunk lid starts to close.
XTo stop the closing process:
RPress the Fbutton on the SmartKey,
or
RPress closing button :or locking but-
ton ;on the trunk lid, or
RPress the remote operating switch on the
driver's door, or
RIn vehicles with HANDS-FREE ACCESS:
kick into the sensor detection range
under the bumper with your foot.
iIf the F button on the SmartKey is
pressed or HANDS-FREE ACCESS is initi-
ated after the closing process is stopped,
the trunk lid opens.
Trunk93
Opening and closing
Z
tions similar to these. This will prevent the
unintentional opening/closing of the trunk.
RDirt caused by road salt around sensors:
may restrict functionality.
RUsing the HANDS-FREE ACCESS with a
prosthetic leg may restrict functionality.
Operation
XTo open/close: kick into sensor detection
range :under the bumper with your foot.
You will hear a warning tone while the trunk
lid is opening or closing.
XIf the trunk lid does not open after sev-
eral attempts: wait at least ten seconds
then move your leg under the bumper once
again.
iIf you hold your foot under the bumper for
too long, the trunk lid does not open or
close. Repeat the leg movement more
quickly if this occurs.
To stop the opening or closing procedure:
Rkick with your leg in the sensor detection
range :under the bumper or
Rpress the closing button in the trunk lid or
Rpress the Fbutton on the SmartKey
If the trunk lid closing procedure has been
stopped:
Rmove your foot under the bumper again and
the trunk lid will open.
If the trunk lid opening procedure has been
stopped:
Rmove your foot under the bumper again and
the trunk lid will close.
Opening/closing automatically from
inside
Important safety notes
GWARNING
Parts of the body could become trapped dur-
ing automatic closing of the trunk lid. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of the
closing area during the closing process.
Use one of the following options to stop the
closing process:
Rpress the Fbutton on the SmartKey.
Rpull or press the remote operating switch
on the driver's door.
Rpress the closing or locking button on the
trunk lid.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
!The trunk lid swings upwards when
opened. Therefore, make sure that there is
sufficient clearance above the trunk lid.
iThe opening dimensions of the trunk lid
can be found in the "Vehicle data" section
(
Ypage 406).
Trunk95
Opening and closing
Z
becomes trapped, release the switch or press
the switch to open the side window again.
GWARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is a risk of injury.
Activate the override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle.
Side window reversing feature
The front side windows are equipped with an
automatic reversing feature. If a solid object
blocks or restricts one of the front side win-
dows from traveling upwards during the auto-
matic closing process, the side window opens
again automatically. During the manual clos-
ing process, the side window only opens
again automatically after the corresponding
switch is released. However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing a side window.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rwhile resetting
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
Opening and closing the side win-
dows
The switches for all side windows are located
on the driver's door. There is also a switch for
the front-passenger side window on the front-
passenger door.
The switches on the driver's door take prec-
edence.
:Front left
;Front right
=Rear right
?Rear left
XTurn the SmartKey to position 1or 2in the
ignition lock (
Ypage 151).
XTo open manually: press and hold the cor-
responding switch.
XTo open fully: press the switch beyond the
point of resistance and release it.
Automatic operation is started.
XTo close manually: pull and hold the cor-
responding switch.
XTo close the front side windows fully:
pull the corresponding switch beyond the
pressure point and release it.
Automatic operation is started.
XTo interrupt automatic operation:
press/pull the corresponding switch again.
iYou can continue to operate the side win-
dows after you switch off the engine or
remove the SmartKey. This function
remains active for five minutes or until you
open a door.
98Side windows
Opening and closing